Please disregard this one; I rewrorded the commit message and forgot to
delete this patch.
On Mon, 2015-10-12 at 17:51 -0400, David Turner wrote:
> From: Ronnie Sahlberg <sahlberg@xxxxxxxxxx>
>
> Add a ref structure for backend methods. Start by adding a method pointer
> for the transaction commit function.
>
> Add a function set_refs_backend to switch between backends. The files
> based backend is the default.
>
> Signed-off-by: Ronnie Sahlberg <sahlberg@xxxxxxxxxx>
> Signed-off-by: David Turner <dturner@xxxxxxxxxxxxxxxx>
> ---
> refs-be-files.c | 10 ++++++++--
> refs.c | 30 ++++++++++++++++++++++++++++++
> refs.h | 15 +++++++++++++++
> 3 files changed, 53 insertions(+), 2 deletions(-)
>
> diff --git a/refs-be-files.c b/refs-be-files.c
> index 1308955..3050f1d 100644
> --- a/refs-be-files.c
> +++ b/refs-be-files.c
> @@ -3225,8 +3225,8 @@ static int ref_update_reject_duplicates(struct string_list *refnames,
> return 0;
> }
>
> -int ref_transaction_commit(struct ref_transaction *transaction,
> - struct strbuf *err)
> +static int files_transaction_commit(struct ref_transaction *transaction,
> + struct strbuf *err)
> {
> int ret = 0, i;
> int n = transaction->nr;
> @@ -3612,3 +3612,9 @@ int reflog_expire(const char *refname, const unsigned char *sha1,
> unlock_ref(lock);
> return -1;
> }
> +
> +struct ref_be refs_be_files = {
> + NULL,
> + "files",
> + files_transaction_commit,
> +};
> diff --git a/refs.c b/refs.c
> index 25ad3b5..f930fe0 100644
> --- a/refs.c
> +++ b/refs.c
> @@ -4,6 +4,29 @@
> #include "cache.h"
> #include "refs.h"
> #include "lockfile.h"
> +/*
> + * We always have a files backend and it is the default.
> + */
> +struct ref_be *the_refs_backend = &refs_be_files;
> +/*
> + * List of all available backends
> + */
> +struct ref_be *refs_backends = &refs_be_files;
> +
> +/*
> + * This function is used to switch to an alternate backend.
> + */
> +int set_refs_backend(const char *name)
> +{
> + struct ref_be *be;
> +
> + for (be = refs_backends; be; be = be->next)
> + if (!strcmp(be->name, name)) {
> + the_refs_backend = be;
> + return 0;
> + }
> + return 1;
> +}
>
> static int is_per_worktree_ref(const char *refname)
> {
> @@ -985,3 +1008,10 @@ int ref_transaction_verify(struct ref_transaction *transaction,
> NULL, old_sha1,
> flags, NULL, err);
> }
> +
> +/* backend functions */
> +int ref_transaction_commit(struct ref_transaction *transaction,
> + struct strbuf *err)
> +{
> + return the_refs_backend->transaction_commit(transaction, err);
> +}
> diff --git a/refs.h b/refs.h
> index 4940ae9..419abf4 100644
> --- a/refs.h
> +++ b/refs.h
> @@ -619,4 +619,19 @@ extern int reflog_expire(const char *refname, const unsigned char *sha1,
> reflog_expiry_cleanup_fn cleanup_fn,
> void *policy_cb_data);
>
> +/* refs backends */
> +typedef int ref_transaction_commit_fn(struct ref_transaction *transaction,
> + struct strbuf *err);
> +typedef void ref_transaction_free_fn(struct ref_transaction *transaction);
> +
> +struct ref_be {
> + struct ref_be *next;
> + const char *name;
> + ref_transaction_commit_fn *transaction_commit;
> +};
> +
> +
> +extern struct ref_be refs_be_files;
> +int set_refs_backend(const char *name);
> +
> #endif /* REFS_H */
--
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